/Engine/Plugins/Runtime/StateTree/Source/StateTreeModule/Public/StateTreeExecutionContext.h
Requests transition to a state. If called during during transition processing (e.g. fromFStateTreeTaskBase::TriggerTransitions()) the transition is attempted to be activate immediately (it can fail e.g. because of preconditions on a target state). If called outside the transition handling, the request is buffered and handled at the beginning of next transition processing.
void RequestTransition ( const [FStateTreeTransitionRequest](API\Plugins\StateTreeModule\FStateTreeTransitionRequest) & Request )